Retort and gas-flow regulating apparatus



Aug. 16, 1927. 1,639,394

E..P. G. WUNSCH RETORT AND GAS mow REGULATING APPARATUS Filed April 10, 1925 Fig.1. i

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4 waxrmm I Patented Aug. 16 1927.

Enron PAUL sumo wt'mscn, or SITEGLITZ, NEAR-BEELIN,

GERMANY, ASSIGNOR To ASKANIA-WEBKE AKTIENGESELLSGHAFT VORMALS CENTRALWERKSTATT DESSAU UND CARL BAMBERG-FRIEDENAU, OF BERLIN -FRIEDENAU, GERMANY.

REPORT ,AND GAS-FLOW REGULATING- APBARATUS.

Application filed April 10, .1925, Serial No. 22,122, andfiir Germany April 26, 1924.

7 It has already been proposed-to regulate c the drawing off of the gases from retorts and coke ovens in this'way that sucking off the gas is made dependent upon the pressure of the atmosphere, and adjusted correspondi'ngly; or the sucking off of the gas is adjusted with the intermediary of a d1fterential pressure regulating device which is so adjusted that the pressure existing 1n the 10 retort is equal to the pressure exist ng in the flues. With plants of the latter klnd a differential pressureregulating device intended to act when gas is being sucked off is necessary for every individual retort.

The present invention relates to an arrangement and combination of parts by which it is rendered possible to efiect the regulation with the simplest means and independently without the employment of any part requiring watching or attending.

My invention is illustrated diagrammat1-- cally and by way of example in the accompanying drawing in which F1gure 1 1s a vertical elevation of one constructional form of the invention with parts in section and Figure 2 a similar elevation of a modification thereof. 1

Referring to Figure 1, a denotes the 'gas generating retort which is enclosed in the heating furnace b heated by a burner b The gas generatedflowsfthrough a pipe 0 into a hydraulic. main or wash box. d filled in, a known manner with water and assist ing in the purification ofthe gas. 6. denotes 'an overflow-pipe, and f a pipe serving to conduct away the purifiedw gas, and forming part of the apparatus for drawing of the gas of? by'suction. v

The resistance which the hydraulic main or wash box d presents the gas passing through it varies according to how much the lower ends of the gas delivery pipes are remote from the level of the liquid con- 4 tained in the hydraulic main. This fact is utilized in my invention for the regulation of the drawing ofi of the gas, in. that, if the suction remains constant, the amount sucked off will be diflerent according to the resistance in the pipe. 7 v In the constructional form illustrated by way of example in Fig. l the regulation is adgusted in conformity with the difference .t will become greater'than that the heating furnace b and terminate at chambers z and h'which are separated from one another by a diaphragm m. The diaphragm is movably connected with a swinging tube 0 provided with a nozzle at its-free which it is supplied constantly with compressed air or another compressed gas.

- end communicating at p with a pipe through Pipes '9 and 1' supported by a bracket .2

terminate opposite the nozzle of the tube 0".

The water with which the'hydraulic main or wash box is. to be filledis supplied through the pipe 8, to the lower end of which .are attached two undulated pipes t'and t;

the highest points of these pipes are connected with the pipes g and 1'.

The manner of operation of this device is as follows: Water is supplied continuously through the pip'esinto the undulated pipes .t and t one half of the amount flowing into receiver, the other half'flowing away to any place whatever, if both undulated pipes present equal resistances. I i

If the ratio between the pressure of'the gas present in the gas generating retort a and the gas present in the heating furnace 6, changes, the same difference of pressure will arise in the chambers iand 7a, or on the two sides of the diaphragm m respectively, in con-sequence whereof the tube 0 will be turned a little to one or the other side. If the pressure existing in the gas generating retort has become too' high, the rod 72 will be moved to the right, the increase of that pressure being transmitted to the chamber a by means of the pipe g. The position of the tube '0 will then be that shown in Fig. 1 in which the nozzle of said tube stands opposite the end of .the pipe 1', in consequence whereof the pressure in the undulated pipe existing in the undulated tube t. Owing tothat increase of pressure in the pipe t the flow of the water through it will be interrupted in that said pressure counteracts the water, causing it to flow away solely through the undulated pipe t. The opening of the overflow pipe e is of such dimension that the water flowing normally from the pipe t into the receiver d may flow out, if however according to the action of the pressure regulator the flow of the water is interrupted in the pipe t sothat the water flows solely through the pipe 25 a greater quantity of water flows into the receiver from the pipe 2, than may flow out through the overflow pipe 6 so that the level of the water rises. As a consequence of the increase of pressure in the. pipe t the level of the water in the basin d of the receiver falls so that a larger amount of gas can and will pass from the pipe 0 into the pipe f until equalization between the pressures in the chamber a and in the furnace b has taken place.

If, reversely, the pressure in the furnace 7) becomes too high, the tube 0 will be so adjusted that its nozzle stands opposite the pipe 9 when thereverse of what has been described in the preceding paragraph will take place, that is to say, the water coming from the pipe 8 will flow solely into the basin d so that its level will rise to a certain maximum height as determined by the overflow pipe 6. The resistance which the gas must overcome to flow from the pipe 0 into the pipe f is then increased correspondingly, and a smaller amount of gas passes from 0 to f until again equalization has taken place.

In the modification shown in Figure 2, the upper end of the overflow pipe 6 is covered with a bell u-connected with a pipe v which terminates just above the swinging tube 0. ment and combination of parts are the same as in Fig. 1. v j

The manner of operation of. this modifica tion is as follows:

According as the pressure in the regulator chambers rises or falls, the tubeo will be swung to one or the other side or, will stand vertically, and the amount of compressed air or compressed gas flowing forth from the nozzle of the tube 0 into the pipe a) or into the atmosphere will vary correspondingly, as does, consequently also the pressure existing in the bell u. The level of the water in the bell will rise or fall correspondingly, and the level of the water outside the bell will fall or rise correspondingly, whereby the resistance which the gas must overcome when flowing from the pipe 0 into the pipe f will be correspondingly varied.

If the tube 0 is in the position shown in Fig. 2, the pressure in the bell a will be increased, the level of the water in the bell The other members of the arrange-- retort and the furnace by the will fall and the level of the water outside the bell will rise so that less gas will, flow from the tube 0 to the tube Reversely, if the nozzle of the tube 0 does not stand just opposite the end of the pipe 4) the level of the water in the bell will be the same as that outside the bell, the resistance to the gas being then obviously less.

It is, with this constructional form, possible to close the hydraulic main (Z and to provide a pipe extending from the closing plate or other covering or lid and terminating just above the swinging tube ofwhereby it is rendered possible to increase the pressure outside the bell beyond that inside it, so that a larger range of action is obtained. Another possibility is to connect the bell with the atmosphere and to regulate solely the pressure existing below said cover or lid of the hydraulic mam.

I claim:

1. A gas flow regulating apparatus having in combination, a gas retort, a heatin furnace for the gas retort, a liquid sea wash box, a regulator controlled by the pressure of the gas in sion means to the liquid seal of the wash box, a regulating device controlled by said regulator and controlling said liquid admission means, the gas fiow being controlled by the height of the liquid seal in the wash box.

2, A gas flow regulating apparatus having in combination, a gas retort, a heating furnace for the gas retort, a liquid seal wash box, a regulator controlled by the pressure of the gas in the retort, liquid admission means to the liquid seal of the wash box, a compressed gas tube controlled by said regulator and controlling said liquid admission means, the gas flow being controlled by the height of the liquid seal in the wash box.

3. A gas flow regulating apparatus having in combination, a gas retort, a heating furnace for the gas retort, a liquid seal wash box, a diaphragm regulator having gas chambers, separate gas conduits from the to the gas chambers, a compressed gas tube controlled by the diaphragm regulator, liquid admission means to the liquid seal of the wash box, said liquid admission means being controlled compressed gas tube, and the gas flow being controlled by the height of the liquid seal in the wash box.

In testimony whereof I have afiixed my signature.

GUIDO "WU NSCH. 

